High %wio, Why ?

From: Levi Ashcol (leviashcol@hotpop.com)
Date: Tue Jun 03 2003 - 04:27:27 EDT

• Next message: Nikul Raval: "Sun OS 4.1.3 and Exabyte 8500 tape drive"
• Previous message: Walse Chen: "urgent: replace controller at storedge 3310"
• Next in thread: Levi Ashcol: "[SUMMARY] High %wio, Why ?"
• Reply: Levi Ashcol: "[SUMMARY] High %wio, Why ?"
• Messages sorted by: [ date ] [ thread ] [ subject ] [ author ] [ attachment ]

Hi Gurus,
Below is the sar output for one of our Solaris 8/PL-15 server
15:19:33 %usr %sys %wio %idle
15:19:35 0 0 0 98
15:19:35 0 0 40 60
15:19:35 0 0 40 60
15:19:35 0 0 40 60

I wonder why there is a high wio percentage ? As far as I understand
this means that there is a certain process(es) waiting for I/O for a
Long period of time ! Am I right ? If so How can I find the process
causing this waiting for the I/O high percentage ?

Any feedback will be appreciated, IWS.

Thanks

Levi
_______________________________________________
sunmanagers mailing list
sunmanagers@sunmanagers.org
http://www.sunmanagers.org/mailman/listinfo/sunmanagers

• Next message: Nikul Raval: "Sun OS 4.1.3 and Exabyte 8500 tape drive"
• Previous message: Walse Chen: "urgent: replace controller at storedge 3310"
• Next in thread: Levi Ashcol: "[SUMMARY] High %wio, Why ?"
• Reply: Levi Ashcol: "[SUMMARY] High %wio, Why ?"
• Messages sorted by: [ date ] [ thread ] [ subject ] [ author ] [ attachment ]

This archive was generated by hypermail 2.1.7 : Wed Apr 09 2008 - 23:26:31 EDT